4202201021 has 2 divisors, whose sum is σ = 4202201022. Its totient is φ = 4202201020.

The previous prime is 4202201011. The next prime is 4202201023. The reversal of 4202201021 is 1201022024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2258625625 + 1943575396 = 47525^2 + 44086^2 .

It is a cyclic number.

It is not a de Polignac number, because 4202201021 - 2¹⁰ = 4202199997 is a prime.

Together with 4202201023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 4202200987 and 4202201005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4202201023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2101100510 + 2101100511.

It is an arithmetic number, because the mean of its divisors is an integer number (2101100511).

Almost surely, 2^4202201021 is an apocalyptic number.

It is an amenable number.

4202201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4202201021 is an equidigital number, since it uses as much as digits as its factorization.

4202201021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 4202201021 is about 64824.3860055766. The cubic root of 4202201021 is about 1613.7104373083.

Adding to 4202201021 its reverse (1201022024), we get a palindrome (5403223045).

The spelling of 4202201021 in words is "four billion, two hundred two million, two hundred one thousand, twenty-one".